Part Numbers School
Out of all BMW part numbers, 99.9% have a typical pattern. The usual pattern is: 11-11-1-111-111. When you give a part number to someone, make sure that you break the number into the proper structure. For people who speak and think in part numbers, it's hard to understand when someone says: "I need 13641468812." No, you need 13-64-1-468-812!
The first two numbers of a part number are the most important, this will determine what category the part goes into.
This section is for motor parts. Most of this section is long block parts (internal engine components). Also this section has motor mounts, hoses, fans, gaskets, water pumps and thermostats. If you want to get really crazy you can go to the second two numbers. The second two numbers are sections of the group. For example, sections (11-13-0-000-000) contain oil pan parts, gaskets, oil pans, drain plugs, etc. This structure works through all the BMW models.
Engine electrical parts. Distributors, caps, rotors, wires, spark plugs, alternators, starters etc. For example, starters are in section: 12-41-0-000-000
Fuel delivery systems. This group includes fuel injectors, carburetors, mechanical fuel pumps, fuel distributors, fuel filters, air flow meters, idle control valves, air filters, intake components etc.
This section is not used.
Gas tanks, electric fuel pumps, senders, etc. For example, the gas tanks are 16-11-0-000-000.
Radiators, fan shrouds, expansion tanks, transmission cooling lines, fan blade etc. The radiators are 17-11-0-000-000, for example.
Exhaust system. Mufflers, down pipes, hangers, gaskets, etc. Sometimes things you think should be in one section will show up in another section. Example, catalytic converters are considered part of the motor, so they go in section 11. You might think they would be in section 18 with the exhaust? Why do they do this? Who knows?
Nothing in here yet.
Clutch parts. Slave cylinders, throw out bearings, clutch discs, pressure plates etc. Pressure Plates are section 21-21-0-000-000, for example.
No 22 section.
Manual transmissions. Mounts, seals, gasket sets, transmissions etc. Transmission mounts are 23-71-0-000-000, for example.
Automatic transmissions. Mounts, seals, gaskets, transmissions etc. Transmission filters are 24-31-0-000-000, for example.
Shifting components. Shift tower mounts, shift knob, bushings, platforms etc. Shift knobs are 25-11-0-000-000, for example.
Drive shaft. Center support, flex disc. Flex discs are 26-11-0-000-000, for example.
No 27-30 sections.
Front suspension. Swing arms, control arms, sub-frames, struts, wheel hub, shock insert, strut mounts. Struts are 31-31-0-000-000, for example.
Steering components. Power steering parts, idler arm, ignition tumbler, tie rods, ball joints etc. Power steering pumps are 32-41-0-000-000, for example.
Rear suspension and axle. Differential, swing arms, sway bar, wheel bearings, sub-frame, springs, shocks etc. Wheel bearings are 33-41-0-000-000, for example.
Brakes. Front brakes, rear brakes, hoses, lines, pads, shoes, master cylinders, rotors, drums etc. Master cylinders are 34-31-0-000-000.
Foot pedals. Pedal box, pedals, bushings, gas pedal, linkage etc. Pedal pads are 35-21-0-000-000.
Rims. Alloy, Steel, lug nuts, emblems, center caps etc. Lug nuts are 36-13-0-000-000
Self leaving rear suspensions and all the unique components that go with them.
38-40 are not used.
Body parts. Sheet metal, fenders, quarter panels, doors, front ends, hoods, trunk lids etc. Doors are 41-51-0-000-000
42-50 are not used.
The largest section in the BMW parts world. This section has everything from bumpers, trim, rubber gaskets, interior, dash, carpet, door panels, and small trim parts.
Seats Front seats, rear seats, seat pads, anything to do with seats.
Sunroof components. Sunroof cables, motors, guides, cranks, felt etc. Sunroof cranks are 54-12-0-000-000.
55-60 are not used.
Body Electric. Wiring harness, ground straps, relays, fuse box, turn signal lenses, switches, sensors etc.
Gauges, electronics inside gauges.
Headlights, fog lights, bulbs, side marker lens. Turn signal lenses are 63-13-0-000-000.
Heater and A/C section. Heater core, heater fan, controls, heater hose, A/C evaporator, A/C compressor, A/C condenser etc. 65-00-0-000-000 Radio, antenna mast, speaker, cruse brain, amplifier.
Window motors on some new cars (this is a new section)
Took kits, jack, trailer hitch, random things.
Seat belts, cargo nets, mud flaps.
Things you can purchase when you have nothing better to do with your money. Ties, models, bikes, watches etc.